Nu-Way MGN 2800N Installation & Maintenance Manual

Nu-Way MGN 2800N Installation & Maintenance Manual Manual pdf 25 page image

MGN 2800N HP 24Burner Fails To Establish Main FlameCheck:• The low flame hold link has been refitted.• The gas valves are operating correctly.• The combustion air is set correctly.• There is sufficient gas.• The control box is not faulty.Burner Motor Only Runs ContinuouslyCheck:• That the air damper motor is correctly wired.• That the air damper motor is not faulty.Replacement Of Air/Gas Ratio ControllerShould the above valve require replacing due to mechanical or electrical failure, then the burner willrequire re-commissioning to restore the proper combustion and performance values. It is essentialthat replacement of this component and re-commissioning of the burner be undertaken only byqualified combustion engineers.Incorrect Rotation Of Burner MotorThe fan motor rotates anti-clockwise viewed from the cooling fan end. If the burner motor rotation isincorrect interchange any two phases. In normal circumstances, this will correct the rotation.Motor & Fan - RemovalShould the motor or combustion air fan need replacing the following procedure can be followed.Disconnect the gas valve train multi-pin plug from the socket on the control package. Remove theretaining screw securing the control package to its mounting bracket. Lift the complete controlpackage from the mounting bracket and rest it on the gas valve train. All securing studs, fixing nuts,and bolts on the motor mounting flange are readily and easily accessible.SERVICE & REPLACEMENTNu-way Ltd Parts & Components Division carry a comprehensive stock making up the burnersystems described in this handbook. Should it become necessary to order replacement parts, it isimportant to quote the burner model, specification and serial numbers to ensure correct expedition ofyour order.Nu-way Ltd is able to offer ‘on site’ Commissioning, Service and Repair through its worldwide networkof authorised distributors and sales offices. Please contact the Nu-way Service Department for furtherinformation.